RedHat Jboss Fuse can be used perfectly to solve application integration or microservices implementation at the departmental or enterprise level. The wide quantity of connectors it provides allows any application to be integrated. Specific technical and programming knowledge is required to build the interfaces, therefore it is not so appropriate for those companies that do not have these employee profiles.
Multiple systems to interface for a task in the company (example: to sell an item your POS must communicate with the inventory software, then to accounting, then to service, etc).
When a task must bring information from several external services.
When you have to deal with multiple APIs.
Not recommended for:
Data transformation (although Talend has a software for that that works with Talend ESB)
RedHat JBoss Fuse has a strong user community, it's fully opensource and it's easy to license with world-class support. It also has strong integration with AMQP messaging system to bring much more control and visibility over integration patterns, messaging flows, and the overall system topology.